Infiniti M45 (Y34). Manual — part 725
REAR FINAL DRIVE ASSEMBLY
RFD-13
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Pre-Inspection
ADS0001N
Before disassembling final drive, drain off oil from the gear and remove the rear cover. Then, perform the fol-
lowing inspection.
TOTAL PRELOAD
1.
Turn drive pinion in both directions several times to set bearing
rollers.
2.
Check total preload with Tool.
DRIVE GEAR TO DRIVE PINION BACKLASH
Check drive gear to drive pinion backlash with a dial gauge at sev-
eral points.
DRIVE GEAR RUNOUT
Check runout of drive gear with a dial gauge.
1.
Drive pinion nut
2.
Companion flange (Rebro joint type) 3.
Front oil seal
4.
Pinion front bearing
5.
Pinion bearing adjusting spacer
(Collapsible spacer)
6.
Pinion rear bearing
7.
Pinion height adjusting washer
8.
Drive pinion
9.
Side oil seal
10. Drive gear
11.
Pinion mate shaft
12. Look pin
13. Pinion mate gear
14. Pinion mate thrust washer
15. Side gear
16. Side gear thrust washer
17. Differential case
18. Side bearing
19. Side bearing adjusting washer
20. Bearing cap
21. Rear cover
22. Filler plug
23. Drain plug
24. Gear carrier
25. Circular clip
26. Gasket
Tool number
: ST3127S000 (see J25765-A)
Total preload
(with oil seal)
: 2.84 - 3.75 N·m (0.29 - 0.38 kg-m, 26 -
33 in-lb)
SDIA1007E
Drive gear backlash
: 0.10 - 0.15 mm (0.0039 - 0.0059 in)
SPD513
Runout limit
: 0.05 mm (0.0020 in) less
SPD886
RFD-14
REAR FINAL DRIVE ASSEMBLY
COMPANION FLANGE RUNOUT
1.
Fit a test indicator to the inner side of the companion flange
(socket diameter).
2.
Rotate the companion flange to check for runout.
3.
If the runout value is outside the repair limit, follow the procedure
below to adjust.
a.
Check for runout while changing the phase between companion
flange and drive pinion gear by 90
°
step, and search for the
point where the runout is the minimum.
b.
If the runout value is still outside of the limit after the phase has
been changed, replace the companion flange.
c.
If the runout value still outside of the limit after the companion flange has been replaced, check pinion
bearing and drive pinion assembly.
TOOTH CONTACT
Disassembly and Assembly
ADS0001O
REMOVAL OF DIFFERENTIAL CASE ASSEMBLY
1.
Using two 45 mm (1.77 in) spacers, mount carrier on Tool.
2.
For proper reinstallation, paint matching marks on one side of
the bearing cap.
Bearing caps are line-board during manufacture. Replace them
in their proper positions.
3.
Remove bearing caps.
Runout limit
: 0.08 mm (0.0031 in)
SDIA2053E
Tool number
: KV38100800 (J25604–01)
SDIA1008E
SPD889
S-PD343
REAR FINAL DRIVE ASSEMBLY
RFD-15
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4.
Lift differential case assembly out with Tool.
●
Keep the side bearing outer races together with inner race.
Do not mix them up.
Also, keep adjusting washers together with bearings.
REMOVAL OF DRIVE PINION ASSEMBLY
1.
Put matching marks on companion flange and drive pinion with
paint.
2.
Loosen drive pinion nut with tool.
3.
Remove companion flange using the suitable puller.
Tool number
: HT72400000 ( – )
S-PD344
SPD919
Tool number
: KV40104000 ( – )
SDIA2054E
SDIA1129E
RFD-16
REAR FINAL DRIVE ASSEMBLY
4.
Take out drive pinion (together with rear bearing inner race, pin-
ion bearing adjusting spacer).
5.
Remove front oil seal. Refer to
6.
Remove pinion front bearing inner race.
7.
Remove side oil seal. Refer to
.
8.
Remove pinion bearing outer races with a brass drift.
9.
Remove pinion rear bearing inner race and drive pinion height
adjusting washer with Tool.
SPD892
SDIA0817E
Tool number
: ST30031000 (J22912-01)
S-PD179
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